from tkinter import *
cords=[0,0,10,0,10,10,20,10,20,20,10,20,10,30,0,30]
print('Ведите начальную координату X:')
X=int(input())
print('Ведите начальную координату Y:')
Y=int(input())
print('Ведите начальную координату N:')
N=int(input())
if N==0 and X>=0 and X<=500 and Y>=0 and Y<=500:
    pass
else:
    if N>0 and 0*N+X>=0 and 0*N+Y>=0 and 20*N+X<=500 and 20*N+Y<=500:
        pass
    else:
        if N<0 and 20*N+X>=0 and 20*N+Y>=0 and 0*N+X<=500 and 0*N+Y<=500:
            pass
        else:
            print('Размер фигуры превышает максимальный размер поля')
            exit()
root=Tk()
root.title("ИТ марафон")
root.geometry("500x500")
canvas=Canvas(bg="white",width=500,height=500)
canvas.pack(anchor=CENTER,expand=1)
canvas.create_polygon(cords[0] *N+X, cords[1] *N+Y,
                      cords[2] *N+X, cords[3] *N+Y,
                      cords[4] *N+X, cords[5] *N+Y,
                      cords[6] *N+X, cords[7] *N+Y,
                      cords[8] *N+X, cords[9] *N+Y,
                      cords[10] *N+X, cords[11] *N+Y,
                      cords[12] *N+X, cords[13] *N+Y,
                      cords[14] *N+X, cords[15] *N+Y,)
root.mainloop()
